Traditional Chinese medicine composition for preventing and treating postpartum hypogalactia of sows and preparation method thereof

Abstract

The invention belongs to the technical field of traditional Chinese medicines, and discloses a traditional Chinese medicine composition for preventing and treating postpartum hypogalactia of sows and a preparation method thereof. The traditional Chinese medicine composition is prepared from the following raw material medicines in parts by weight: 30-50 parts of franchet peashrub flower, 20-40 parts of entada phaseoloides, 10-30 parts of astragalus membranaceus, 10-30 parts of codonopsis pilosula, 10-30 parts of bidens frondosa, 20-40 parts of meadowrue herb, 10-30 parts of mountain peony, 10-20 parts of coriander herb and 10-20 parts of liquorice. The preparation method comprises the following steps: mixing the raw material medicines in parts by weight, crushing, adding water, decocting, extracting, filtering, and collecting filtrate to obtain the traditional Chinese medicine composition. The traditional Chinese medicine composition can effectively prevent and treat postpartum hypogalactia of sows, so that the average weight and the average daily gain of weaned piglets on the day are effectively increased, meanwhile, the survival rate of the weaned piglets can be effectively increased, and the traditional Chinese medicine composition is low in price, green, safe, free of toxic and side effects, drug resistance and the like and has good market application and popularization value.

Description

Technical Field

[0001] The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to a traditional Chinese medicine composition for preventing and treating postpartum sow lactation deficiency and a preparation method thereof. Background Art

[0002] Breast milk is the only source of energy and nutrients for suckling piglets before the use of creep feed. The lactation performance of sows has an important impact on the growth and development, health, and future breeding value and fattening effect of piglets. The lactation ability of lactating sows is one of the important indicators for evaluating the production performance of sows. It directly affects the growth and development of piglets and the production efficiency of breeding pigs. With the development of pig breeding, the goal of high litter size of sows has been gradually achieved, and the problem of insufficient milk has become more and more obvious, which has seriously affected the production potential of piglets. Therefore, whether from the perspective of developing the growth potential of piglets or increasing the efficiency of breeding pig farming, the improvement and regulation of sow postpartum milk deficiency is becoming increasingly important.

[0003] Sow lactation is a process of selectively absorbing blood, so the formation of milk is generally related to three physiological factors. First, changes in blood composition. At different stages of lactation, the concentration of nutrients related to milk production in the blood will undergo a series of changes. The closer to the end of lactation, the relatively poorer some substances will be. Second, changes in the functions of mammary ducts and alveoli, such as the size, permeability, and development of the ducts and alveoli, will produce certain differences in the secretion and absorption of certain substances at different stages. Third, the influence of certain hormones, such as estrogen, progesterone, growth hormone, adrenocorticotropic hormone and adrenocortical hormone, oxytocin, lactotrophin, etc., lead to changes in the amount of milk due to the synergistic effect and changes in the amount of secretion.

[0004] Chinese herbal medicine has the characteristics of multi-target effects in the body. Chinese herbal medicine contains various nutrients such as protein, amino acids, sugar, fat, starch, vitamins, trace elements, etc. Adding them to feed can improve its nutritional content and structural ratio, so that it can be more fully absorbed, thereby improving feed utilization and animal production performance. Certain trace elements in Chinese herbal medicine are closely related to the synthesis and secretion of hormones involved in mammary gland development and lactation, and can increase milk production on the basis of improving the physique of sows. Chinese herbal medicine regulates lactation function by increasing the level of cyclic nucleotides in the body and promoting mammary gland anabolism, which plays a role in increasing milk. Chinese herbal medicine has been used to prevent and treat human and animal diseases since ancient times. It has the advantages of being pure natural, residue-free, and multi-target. The unique advantages of lactation-promoting Chinese medicine have good market development prospects. Summary of the invention

[0005] In view of the problems and shortcomings in the prior art, the present invention aims to provide a Chinese medicine composition for preventing and treating postpartum lactation in sows and a preparation method thereof.

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is as follows:

[0007] The first part of the present invention provides a traditional Chinese medicine composition for preventing and treating postpartum sow lactation deficiency. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 30-50 parts of Yangquehua, 20-40 parts of Qutengtianzi, 10-30 parts of Astragalus, 10-30 parts of Codonopsis pilosula, 10-30 parts of Dioscorea paniculata, 20-40 parts of Longtoucao, 10-30 parts of Mountain Peony, 10-20 parts of Tonglie, and 10-20 parts of Licorice.

[0008] Preferably, the traditional Chinese medicine composition is made of the following raw materials in parts by weight: 40 parts of Yangquehua, 30 parts of Ge Teng Zi, 20 parts of Astragalus, 15 parts of Codonopsis pilosula, 15 parts of Dioscorea paniculata, 25 parts of Longtoucao, 20 parts of Mountain Peony, 10 parts of Tonglie, and 10 parts of Licorice.

[0009] Preferably, the Chinese medicine composition is a water-soluble extract obtained by crushing and decocting the raw medicine.

[0010] The second part of the present invention provides a method for preparing the above-mentioned Chinese medicine composition, which comprises mixing the raw materials according to weight proportions, crushing to obtain raw material powder with a particle size not exceeding 20 meshes, adding water to decoct and extract, filtering, and collecting the filtrate to obtain the Chinese medicine composition.

[0011] Preferably, the process of decocting with water is as follows: first, add water 8 to 10 times the total weight of the raw material and decoct for 1 to 2 hours, then add water 6 to 8 times the total weight of the raw material to the filtered residue and decoct once more.

[0012] The third part of the present invention provides a medicine for preventing and treating postpartum lactation in sows, which is prepared from the Chinese medicine composition described in the first part and pharmaceutically acceptable excipients.

[0013] Preferably, the dosage form of the drug is an oral dosage form.

[0014] More preferably, the medicine is in the form of granules, oral solution, extract or powder.

[0015] More preferably, the preparation method of the granules is: concentrating the water-soluble extract of the traditional Chinese medicine composition to prepare an extract, adding auxiliary materials, and granulating.

[0016] More preferably, the mass ratio of the extract to the auxiliary materials is 1:2.

[0017] Preferably, the method of using the granules is: mix 1000 kg of feed with 1 kg of granules, and use it for 15 consecutive days.

[0018] All components in the Chinese medicine composition of the present invention can be purchased from the market. The formulation principle of the Chinese medicine composition is as follows:

[0019] Yangquehua: It is the flower of Caragana yunnanensis, a plant of the Leguminosae family. The flowers are collected in summer and dried in the sun. It tastes sweet and slightly bitter; neutral. It enters the kidney meridian. It replenishes qi and strengthens the kidney. It is mainly used to treat kidney deficiency tinnitus, uterine bleeding in women, insufficient milk, dizziness, headache, cough due to tuberculosis, and malnutrition in children. Literature records that the plant mainly contains chemical components such as flavonoids, diphenylethylene, terpenes, and steroids.

[0020] Fructus truncatulae: It is the dried mature kernel of Fructus truncatulae of the genus Fructus truncatulae of the Leguminosae family. It has the effects of replenishing qi and blood, strengthening the stomach and digestion, removing wind and relieving pain. It is used to treat qi and blood deficiency, loss of appetite, rheumatic joint pain, sexual indifference, etc. Fructus truncatulae has a long history of medicinal use and significant clinical efficacy. Its chemical composition is complex and diverse, mainly containing saponins, sulfamides, phenols and phenolic glycosides, etc. It has anti-tumor, anti-inflammatory, analgesic, hypoglycemic, lipid-regulating and other pharmacological effects.

[0021] Astragalus: Astragalus has a long history of medicinal use and is known as the "longest tonic". It is one of the most commonly used Chinese medicines in Chinese medicine throughout the ages. Studies on the chemical composition and pharmacological activity of Astragalus have shown that Astragalus is mainly composed of polysaccharides, triterpenes, flavonoids and other components, and plays an important role in immunoregulation, anti-virus, anti-tumor, and anti-aging. Lactation regulation mainly utilizes the physiological function of isoflavones in Astragalus. Isoflavones in Astragalus mainly act on the hypothalamus and pituitary gland to promote the secretion of growth hormone (GH) and prolactin (PRL). Studies have shown that GH first regulates material metabolism and the distribution of nutrients between tissues to maintain the mammary gland to absorb rich nutrients, and secondly stimulates the liver or other organs to produce insulin growth factor (IGFS) to act on the IGFS receptors of mammary cells to promote mammary development and lactation; PRL regulates lactation by acting on the PRL receptors of the mammary gland and inducing the liver or other organs to produce prolactin synergistic factors.

[0022] Codonopsis: The dried root of Codonopsis pilosula, Codonopsis pilosula, or Codonopsis pilosula of the Campanulaceae family. Codonopsis pilosula is sweet and neutral in nature. It can replenish qi, quench thirst, strengthen the spleen and lungs, nourish blood and produce body fluid. It is used for spleen and lung qi deficiency, lack of appetite and fatigue, cough and asthma, qi and blood deficiency, sallow complexion, palpitations and shortness of breath, thirst due to loss of body fluid, internal heat and thirst. It is used for lazy speech and shortness of breath, weakness in the limbs, poor appetite, qi deficiency, qi and body fluid deficiency, qi and blood deficiency and sallow complexion due to blood deficiency. However, it cannot be used for those with external symptoms that have not been resolved and the middle is full of evil.

[0023] Dragon Head Grass: Dragon Head Grass is a genus of the Lamiaceae family, an annual or perennial herb. It tastes sweet, spicy, and neutral. Dragon Head Grass is also known as Carp Grass. It replenishes Qi and blood, removes rheumatism, and relieves swelling and poison. It is mainly used for fatigue, Qi and blood deficiency, abdominal pain, sore throat, and snake bites. It contains flavonoids, alkaloids, phenols and their glycosides, volatile oils, etc. It has antioxidant activity, hyaluronidase inhibitory activity, and anti-Helicobacter pylori-induced gastric cancer effects.

[0024] Mountain Peony: It is the root bark or the whole plant of the Convolvulaceae plant, Silver Back Codonopsis pilosula. It is harvested throughout the year or in summer and autumn, and the impurities are removed, sliced ​​or segmented, and dried in the sun. It tastes slightly astringent; warm. It enters the heart; lung meridian. It replenishes qi and generates blood; it disperses blood stasis and stops bleeding. It is used to treat dizziness due to blood deficiency, fractures, and internal bleeding.

[0025] Tonglie: The root, stem and leaf of the plant Akebia affine. It tastes bitter, slightly astringent and slightly salty. It can dredge the meridians, activate the collaterals, and replenish qi and blood.

[0026] Herba Lycopodii: This product is the dried aerial part of Herba Lycopodii of Asteraceae. It is harvested from June to September, whole plant or cut into sections, and sun-dried. Bitter, flat. Replenishes Qi, clears heat. It is used for weakness, night sweats, hemoptysis, dysentery. It has a slight smell and a slightly bitter taste.

[0027] Licorice: It is the dried root and rhizome of the leguminous plants licorice, licorice inflated fruit or licorice glabra. It tastes sweet and is neutral in nature. It enters the heart, lung, spleen and stomach meridians. It nourishes the spleen and replenishes qi, clears away heat and detoxifies, removes phlegm and relieves cough, relieves pain, and harmonizes various medicines. It has the effects of nourishing the spleen and replenishing qi, clearing away heat and detoxifying, removing phlegm and relieving cough, relieving pain, and harmonizing various medicines. It is often used for spleen and stomach weakness, fatigue, palpitations and shortness of breath, cough with sputum, acute pain in the abdomen and limbs, carbuncle, sore and poison, and relieves drug toxicity and potency.

[0028] The conclusion of Chinese veterinary dialectics on sows' lack of milk: Chinese veterinary medicine believes that sows' lack of milk after delivery is very common. The main characteristics of the disease are udder shrinkage, decreased milk secretion or udder enlargement during lactation, and poor milk secretion, and little or no milk discharge. Common clinical syndromes can be divided into two categories: 1) Qi and blood deficiency type. Main symptoms: coarse and dull hair, thin body, udder shrinkage, and no milk when squeezed. The visible mucous membrane is pale and the limbs are cold. Causes: single feed, malnutrition, multiple births and high production, loss of qi and blood, or chronic diseases, weak spleen and stomach, weak movement or postpartum hemorrhage resulting in qi and blood deficiency. 2) Qi and blood stasis type. Main symptoms: no change in spirit and appetite, enlarged breasts, firm to the touch, no heat and pain, little milk, and restlessness of mother and baby. Causes: too much energy feed, insufficient exercise, fat deposition, poor circulation of qi and blood, and blood cannot be transformed into milk. In addition, there are also external stimuli and disturbances that cause liver qi stagnation and abnormal lactation. After a lot of research, it was found that the two symptoms often appear together in clinical practice. Chinese medicine says that "Qi is the commander of blood, and blood is the mother of Qi", that is, Qi is the driving force for the generation and movement of blood, and blood is the basis and carrier of Qi. It is not advisable to simply promote Qi and remove blood stasis or to replenish Qi. Simply promoting Qi and removing blood stasis will easily consume Qi and damage Yin, leading to Qi and blood deficiency, while simply replenishing Qi and blood will easily cause Qi and blood stagnation and fire, resulting in internal fire. Chinese medicine says: "Before pregnancy, there is a basin of fire, after pregnancy, there is a pool of water", which is even more true for sows with postpartum milk deficiency. The treatment should be to nourish the kidney and spleen, regulate Qi and activate blood circulation.

[0029] The present invention derives the treatment principle according to the conclusion of TCM syndrome differentiation, and considers economic factors at the same time. The specific prescription mechanism is as follows: Yangquehua, a special medicine for kidney meridian, is used as the monarch medicine to invigorate qi and benefit the kidney, warm the kidney yang, transform into the source of qi and blood, qi flow leads to blood flow, and blood flow leads to blood stasis; Fructus sylvestris soothes the liver and strengthens the spleen, Codonopsis pilosula and Radix Astragali invigorate the middle qi, and Herba Lycopodii nourishes yin and replenishes deficiency, which are all ministerial medicines, assisting the monarch medicine to invigorate qi and nourish blood, and transform into milk; Longtoucao treats blood deficiency and internal wind, Tonglie promotes meridians and activates collaterals, and Herba Peoniese invigorates blood circulation and disperses blood stasis, which are all adjuvants, cooperate to treat blood deficiency and qi deficiency leading to microcirculation stagnation, and Radix Glycyrrhizae invigorates the spleen and replenishes qi and harmonizes various medicines as the guiding medicine. All medicines are used together to play the functions of invigorating qi and nourishing blood, regulating qi and promoting lactation.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] (1) The Chinese medicine composition of the present invention has a definite clinical effect in preventing and treating postpartum lactation in sows. In clinical trials, the use of 1 kg granules / 1000 kg feed can effectively increase the average weight and average daily weight gain of piglets on the day of weaning. Compared with piglets not treated with the drug, the drug provided by the present invention can significantly increase the average weight and average daily weight gain of weaned piglets. At the same time, it can effectively increase the survival rate of weaned piglets, and the survival rate can be increased from 90% to more than 98%.

[0032] (2) The present invention is a pure Chinese medicine preparation, which is green, safe, non-toxic and non-side effects, and the granules have no palatability problems, and can be used for mixing with feed and drinking water. In addition, the market price of all medicinal flavors of the Chinese medicine composition of the present invention has been less than 30 yuan per kilogram in the past five years. The market supply of medicinal materials is sufficient and the price is low, which has good market application and promotion value. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail by way of embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Example 1

[0035] The embodiment of the present invention provides a traditional Chinese medicine composition for preventing and treating postpartum milk deficiency in sows. The traditional Chinese medicine composition is composed of traditional Chinese medicine extracts equivalent to the following raw Chinese medicinal materials in weight: 40 parts of Yangquehua, 30 parts of Qutengtianzi, 20 parts of Astragalus, 15 parts of Codonopsis pilosula, 15 parts of Dioscorea paniculata, 25 parts of Longtoucao, 20 parts of Mountain Peony, 10 parts of Tonglie, and 10 parts of Licorice.

[0036] The preparation method of the above-mentioned Chinese medicine composition comprises the following steps:

[0037] (1) Weighing each raw material drug according to weight proportion, mixing, and pulverizing. After the pulverization, the mesh size of the powder is 20 mesh, thereby obtaining raw material drug powder;

[0038] (2) First, add 10 times the total weight of the API to boil the API powder for 1.5 hours, filter the effluent, add 8 times the total weight of the API to the residue and boil it again in the same way, filter and collect the filtrate, and pool the two filtrates to obtain the water-soluble extract of the API;

[0039] (3) After the water-soluble extract of the obtained raw material drug is concentrated to form an extract, the auxiliary excipient glucose is added, and the mass ratio of the extract to glucose is 1:2, and a one-step granulation process is used to prepare granules.

[0040] Example 2

[0041] The embodiment of the present invention provides a traditional Chinese medicine composition for preventing and treating postpartum milk deficiency in sows. The traditional Chinese medicine composition is composed of traditional Chinese medicine extracts equivalent to the following raw Chinese medicinal materials in weight: 30 parts of Yangquehua, 20 parts of Qutengtianzi, 10 parts of Astragalus, 10 parts of Codonopsis pilosula, 10 parts of Dioscorea paniculata, 20 parts of Longtoucao, 10 parts of Mountain Peony, 10 parts of Tonglie, and 10 parts of Licorice.

[0042] The preparation method of the above-mentioned Chinese medicine composition comprises the following steps:

[0043] (1) Weighing each raw material drug according to weight proportion, mixing, and pulverizing. After the pulverization, the mesh size of the powder is 20 mesh, thereby obtaining raw material drug powder;

[0044] (2) First, add 10 times the total weight of the API to boil the API powder for 1.5 hours, filter the effluent, add 8 times the total weight of the API to the residue and boil it again in the same way, filter and collect the filtrate, and pool the two filtrates to obtain the water-soluble extract of the API;

[0045] (3) After the water-soluble extract of the obtained raw material drug is concentrated to form an extract, the auxiliary excipient glucose is added, and the mass ratio of the extract to glucose is 1:2, and a one-step granulation process is used to prepare granules.

[0046] Example 3

[0047] The embodiment of the present invention provides a Chinese medicine composition for preventing and treating postpartum sow lactation deficiency. The Chinese medicine composition is composed of Chinese medicine extracts equivalent to the following Chinese medicinal materials in weight: 50 parts of Yangquehua, 40 parts of Qutengtengzi, 30 parts of Astragalus, 30 parts of Codonopsis, 30 parts of Dalangbacao, 40 parts of Longtoucao, 30 parts of Mountain Peony, 20 parts of Tonglie, and 20 parts of Licorice

[0048] The preparation method of the above-mentioned Chinese medicine composition comprises the following steps:

[0049] (1) Weighing each raw material drug according to weight proportion, mixing, and pulverizing. After the pulverization, the mesh size of the powder is 20 mesh, thereby obtaining raw material drug powder;

[0050] (2) First, add 10 times the total weight of the API to boil the API powder for 1.5 hours, filter the effluent, add 8 times the total weight of the API to the residue and boil it again in the same way, filter and collect the filtrate, and pool the two filtrates to obtain the water-soluble extract of the API;

[0051] (3) After the water-soluble extract of the obtained raw material drug is concentrated to form an extract, the auxiliary excipient glucose is added, and the mass ratio of the extract to glucose is 1:2, and a one-step granulation process is used to prepare granules.

[0052] Example 4 Drug Efficacy Test

[0053] 1. Test materials

[0054] (1) Experimental animals: 54 healthy American Large White sows of similar parity and expected date of delivery from the experimental pig farm of the Animal Husbandry Research Institute of Henan Academy of Agricultural Sciences.

[0055] (2) Feed: Self-prepared complete feed in accordance with the feeding standards for sows in late pregnancy. The specific formula is shown in Table 1.

[0056] Table 1 Basic diet formula and nutritional level

[0057]

[0058]

[0059] Note: After adding premix, the content of vitamins and trace elements per kilogram of feed is: vitamin A 3500 IU, vitamin E 20 IU, vitamin B1 1 mg, vitamin B12 12.0 mg, folic acid 1.0 mg, D-pantothenic acid 10 mg, niacin 8 mg, biotin 0.2 mg, Fe 80 mg, Zn 50 mg, Cu 30 mg, Mn 20 mg, I 0.2 mg, Se 0.2 mg.

[0060] (3) Medicine: the Chinese medicinal composition for preventing and treating postpartum lactation in sows prepared in Example 1.

[0061] 2. Experimental Grouping

[0062] The sow group had a total of 54 sows, 27 in the blank group, 9 in each group, and 3 replicates; 27 in the Chinese medicine group, 9 in each group, and 3 replicates. The blank group was fed only with a basic diet, and the Chinese medicine group was fed with a basic diet and the Chinese medicine composition prepared in Example 1 for 15 consecutive days. The medication conditions of each group are shown in Table 2 below.

[0063] Table 2 Medication methods for each group

[0064]

[0065] Data collection and recording: On the day of sow farrowing, accurately record the number of live piglets born and the average weight of newborn piglets for each sow; on the day of weaning of piglets at 21 days old, accurately record the number of live piglets weaned and the average weight of weaned piglets in each litter, and calculate the average daily weight gain and survival rate of piglets respectively. The level of sow lactation is generally evaluated comprehensively by the changes in growth performance and survival rate of piglets from farrowing to weaning. Therefore, using the average daily weight gain and survival rate as evaluation indicators can effectively provide feedback on the prevention and treatment of postpartum lactation deficiency in sows by the Chinese medicine composition.

[0066] 3. Test results

[0067] The data recorded for each group are shown in Table 3, where average daily weight gain = (average weight of weaned piglets - average weight of newborn piglets) / 21 days; survival rate = (number of piglets born alive at weaning / number of piglets born alive at farrowing)*100%.

[0068] Table 3 Experimental results of each group

[0069]

[0070]

[0071] Note: The same letters in the same row indicate no significant difference, p>0.05; different letters indicate significant difference, p<0.05.

[0072] It can be seen from the test results in Table 3 that the use of the Chinese medicine composition at a dosage of 1kg granules / 1000kg feed can effectively increase the average weight and average daily weight gain of piglets on the day of weaning, which is reflected in the average weight and average daily gain data of piglets on the day of weaning on the 21st day between the blank control group and the Chinese medicine group, and there is a significant difference. The use of the Chinese medicine composition at a dosage of 1kg granules / 1000kg feed can effectively increase the survival rate of weaned piglets, which is reflected in the survival rate data of piglets on the day of weaning on the 21st day between the blank control group and the Chinese medicine composition group, and the survival rate can be increased from 90% to more than 98%.

[0073] The above embodiments are intended to illustrate the essential content of the present invention, but are not intended to limit the protection scope of the present invention. Those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and protection scope of the technical solution of the present invention.

Claims

1. A Chinese medicinal composition for preventing and treating postpartum lactation in sows, characterized in that: The Chinese medicine composition is prepared from the following raw materials in parts by weight: 30-50 parts of Yangquehua, 20-40 parts of Quercus truncatula, 10-30 parts of Astragalus, 10-30 parts of Codonopsis pilosula, 10-30 parts of Dioscorea paniculata, 20-40 parts of Longtoucao, 10-30 parts of Mountain Peony, 10-20 parts of Coptis chinensis, and 10-20 parts of Licorice. The raw materials are sourced from Chinese medicinal materials or Chinese medicinal extracts equivalent to the raw drug amount of the Chinese medicinal materials.

2. The Chinese medicinal composition for preventing and treating postpartum lactation in sows according to claim 1, characterized in that: The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 40 parts of Yangquehua, 30 parts of Ge Teng Zi, 20 parts of Astragalus, 15 parts of Codonopsis pilosula, 15 parts of Dioscorea paniculata, 25 parts of Longtoucao, 20 parts of Mountain Peony, 10 parts of Tonglie, and 10 parts of Licorice.

3. The Chinese medicinal composition for preventing and treating postpartum lactation in sows according to claim 2, characterized in that: The Chinese medicine composition is a water-soluble extract obtained by crushing and decocting the raw medicine.

4. The method for preparing the Chinese medicinal composition for preventing and treating postpartum lactation in sows according to any one of claims 1 to 3, characterized in that: The raw materials are mixed according to weight proportions, crushed to obtain raw material powder with a particle size not exceeding 20 meshes, added with water for decoction, filtered, and the filtrate is collected to obtain the traditional Chinese medicine composition.

5. The preparation method according to claim 4, characterized in that: The specific process of decocting with water is as follows: first, add water 8 to 10 times the total weight of the raw material medicine and decoct for 1 to 2 hours, then add water 6 to 8 times the total weight of the raw material medicine to the filtered residue and decoct once more.

6. A drug for preventing and treating postpartum lactation in sows, characterized in that: The medicine is prepared from the Chinese medicine composition according to any one of claims 1 to 3 and pharmaceutically acceptable excipients.

7. The drug according to claim 6, characterized in that The dosage form of the drug is an oral dosage form.

8. The drug according to claim 7, characterized in that The medicine is in the form of granules, oral liquid, extract or powder.

9. The drug according to claim 8, characterized in that The preparation method of the granules comprises the following steps: concentrating the water-soluble extract of the traditional Chinese medicine composition into an extract, adding auxiliary materials, and granulating.

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